Update main.dart [build]

Author: ZoranJeremic

lib/main.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:dynamic_color/dynamic_color.dart'; // Obavezan import
 import 'ui/screens/home_screen.dart'; 
 import 'ui/screens/document_viewer_screen.dart';
 
@@ -11,14 +12,53 @@ class FSentenceApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      title: 'f.Sentence',
-      debugShowCheckedModeBanner: false,
-      theme: ThemeData(
-        colorScheme: ColorScheme.fromSeed(seedColor: Colors.orange),
-        useMaterial3: true,
-      ),
-      home: const HomeScreen(), 
+    // Ovo je "magija" koja izvlači boje iz sistema
+    return DynamicColorBuilder(
+      builder: (ColorScheme? lightDynamic, ColorScheme? darkDynamic) {
+        
+        // Definišemo fallback boje (ako sistem nema dynamic color)
+        ColorScheme lightColorScheme = lightDynamic ?? ColorScheme.fromSeed(
+          seedColor: Colors.orange,
+        );
+        
+        ColorScheme darkColorScheme = darkDynamic ?? ColorScheme.fromSeed(
+          seedColor: Colors.orange,
+          brightness: Brightness.dark,
+        );
+
+        return MaterialApp(
+          title: 'f.Sentence',
+          debugShowCheckedModeBanner: false,
+          
+          // SVETLA TEMA
+          theme: ThemeData(
+            useMaterial3: true,
+            colorScheme: lightColorScheme,
+            // Ovde smo "ubacili" tvoje tanke headinge
+            textTheme: const TextTheme(
+              headlineLarge: TextStyle(fontWeight: FontWeight.w300),
+              headlineMedium: TextStyle(fontWeight: FontWeight.w300),
+              titleLarge: TextStyle(fontWeight: FontWeight.w300),
+            ),
+          ),
+          
+          // TAMNA TEMA
+          darkTheme: ThemeData(
+            useMaterial3: true,
+            colorScheme: darkColorScheme,
+            textTheme: const TextTheme(
+              headlineLarge: TextStyle(fontWeight: FontWeight.w300),
+              headlineMedium: TextStyle(fontWeight: FontWeight.w300),
+              titleLarge: TextStyle(fontWeight: FontWeight.w300),
+            ),
+          ),
+
+          // Automatski prebacuje na dark mode ako je tako na sistemu
+          themeMode: ThemeMode.system, 
+          
+          home: const HomeScreen(),
+        );
+      },
     );
   }
 }